When it comes to equipment for heavy-duty lifting and position, Thern has the experience you are looking for. Large or small, heavy or light, Thern has design and manufactured standard and custom cranes and winches for countless customer applications around the world.

For more information on Thern Winches please get in contact with an I&I Slingmax Outside Product advisor.

Worm Spur (WS) Series

Capacity (lbs)800 – 15002000 – 37003100 - 64007000 - 10,00013,000 - 16,00022,000 - 26,000
Line Speed15 – 40 fpm7 – 20 fpm4 – 20 fpm10 – 30 fpm15 – 35 fpm10 – 35 fpm
Travel Distance140 – 260 ft270 – 500 ft310 – 660 ft540 – 1500 ft490 – 1530 ft440 – 1480 ft
H.P.0.5 – 21 – 31.5 – 55 – 107.5 – 1010 – 15
Models4WS1M6M4WS3M104WS6M124WS9M184WS16M204WS26M26

Helical Spur (HS) Series

Capacity (lbs) ⇒


5000 – 66009000 – 11,00013,000 – 16,00022,000 – 26,00033,000 – 40,00048,000 – 56,000
Line Speed15 – 40 fpm15 – 40 fpm10 – 40 fpm15 – 30 fpm20 – 40 fpm20 – 35 fpm
Travel Distance400 – 850 ft540 – 1170 ft490 – 1530 ft440 – 1070 ftt720 – 1290 f720 – 1630 ft
H.P.2 – 7.55 – 105 – 1510 – 2020 – 4030 – 50
Models4HS6M4HS11M4HS16M4HS26M
4HS40M4HS56M

Helical Worm (HWF) Series

Capacity (lbs) ⇒

1500 lbs2000 lbs4000 lbs6000 lbs8000 lbs
Line Speed25 – 35 fpm25 – 35 fpm25 – 35 fpm25 – 35 fpm25 – 35 fpm
Travel Distance300 – 830 ft270 – 750 ft710 – 2120 ft360 – 990 ft390 – 1210 ft
H.P.1.5 – 22 – 33 – 55 – 7.57.5 – 10
Models
4HWF1M4HWF2M4HWF4M4HWF6M4HWF8M

Helical Parallel (HPF) Series

Capacity (lbs) ⇒2000 lbs5000 lbs9000 lbs15,000 lbs20,000 lbs25,000 lbs
Line Speed20 – 35 fpm20 – 35 fpm20 – 40 fpm25 – 35 fpm20 – 40 fpm20 – 40 fpm
Travel Distance300 – 830 ft710 – 2120 ft390 – 1210 ft480 – 940 ft610 – 2070 ft470 – 1050 ft
H.P.1 – 23 – 55 – 1010 – 1510 – 2515 – 30
Models4HPF2M4HPF5M4HPF9M4HPF15M4HPF20M4HPF25M

Helical Bevel Planetary (HBP) Series

Capacity (lbs) ⇒35,000 – 100,000 lbs
Line SpeedUp to 70 fpm
Travel DistanceUp to 1300 ft
H.P.20 – 35
Series

4HBP